High-Volume Bullish Engulfing

How This Script Works
Bullish Engulfing Pattern:

The current candle engulfs the previous red candle.
Open price is lower than the previous close, and the close is higher than the previous open.
High Volume Filter:

The current volume must be higher than 1.5x the average volume over the last 5 candles (configurable).
RSI Confirmation (Optional):

If enabled, checks if RSI is below 30 (oversold zone), increasing accuracy.
Marks Engulfing Candles on the Chart

A green arrow is plotted when the conditions are met.